Finding the Third Proportional to 13,700 and 17,310

Step by Step Solution

1. Step 1: Write the proportion equation
   13,700 : 17,310 = 17,310 : x
2. Step 2: Convert to fraction form
   13,700/17,310 = 17,310/x
3. Step 3: Cross multiply
   13,700x = 17,310 × 17,310
4. Step 4: Simplify right side
   13,700x = 299,636,100
5. Step 5: Solve for x
   x = 299,636,100/13,700
6. Step 6: Final answer
   x = 21,871.25